Pumping apparatus.



No. 796,724. PATPNTPD AUG. a, 1905.

P. c. HBWIPP.

PUMPING APPARATUS.

APPLICATION FILED JAN. 18. 1905.

. I L., W l A M 7, @1Mo/Many PETER COOPER HEWITT, OF NEV YORK, N. Y.

PUMPING APPARATUS Specification of Letters Patent.

Patented Aug'. 8, 1905.

Application filed January 18, Selltl N0.

To @ZZ whom, it may concern:

Be it known that I, PETER COOPER HEWITT, a citizen of the United States, residing in the city of New York, in the borough of Manhattan and State of New York, have invented certain new and useful Improvements in Pumping' Apparatus, of which the vfollowing is a full, clear` and exact description.

This invention relates to pumping apparatus, the primary object being to provide an apparatus for furnishing lubricating material to bearings and other points where it is needed in an engine or machine and in such quantities as may be necessary for the requirements at each particular location. The invention, however, is not in any manner limited in its uses as a pump or distributer, and the material acted upon may be oil, water, air, gas, or any other fluid.

A further object of the invention is to provide a sectional pumping apparatus whereby any required number of sections can be assembled together to constitute a single pumping apparatus capable of' distributing the oil or other material to as many different points as there are sections in t-he structure and in quantities varying with the requirements at the respective points of consumption, such a sectional apparatus being less costly and more com pact and lighter than the same number of individual separate pumps.

Each section of my improved pumping apparatus comprises a body or frame having an inlet-passage for the uid to be acted upon, a cavity in which two intermeshing gears rotate to force the material along, an outletport, and suitable perforations for bolts and driving-shafts. The inlet-passages of the various sections communicate at a single point with a source of supply. independent of each other and connect with conduits leading to the respective points of delivery. The gears are driven, preferably, from a single shaft, over or along which the sections are strung or passed in a series in such manner that the shaft will pass through one of the gears in each section, a spline on the shaft engaging the various gears. The second gear of each section may be driven from the first.

The invention will be more specifically described in connection with the accompanying drawings, in which- Figure 1 is a side elevation, onasmall scale, of a complete pumping apparatus. Fig. 2 is The outlet-passages are 'a plan of the same, on an enlarged scale, a portion being in section and one of the end plates removed. Figs. 3 and 4 are views of the opposite faces of a pump-section. Fig. 5 is avertical section of one of the sections of the pump, showing adjacent sections in dotted lines; and Fig. 6 is a detail of a modification.

The sections of the pump are indicated by a a' a2 a?, &c. Each section consists of a substantially elliptical casting b, having its opposite faces machined off to fit adjoining sections and provided with two cylindrical openings c and c and two ports Z and e, /respectively. In one face of the casting is an elliptical countersink or chamber f, adapted to receive two engaging gears g and g The hubs of these gears respectively pass into and have bearings in the openings 0 c. The port a7, opens into the chamber f on one side of the intermeshing-point of the gears, while from the opposite side of the intermeshingpoint the port e leads from the chamber f and thence at right angles upward through the topof the casting, where it connects with a pipe or duct t, leading to one of the points to be lubricated. The port d is the inlet-port, and the port e the outlet-port, of each pumpsection, the gears being supposed t0 rotate in the directions indicated by the arrows in Fig 3 to convey the material from the inlet to the outlet side of the chamber f. The capacity of each section is determined bythe width of the faces of its gears and the correspending depth of the chamber f, in which they rotate. Obviously by this arrangement different sections may have different capacities to meet the demand. Each section is also provided with perforations z', through which long bolts j, common to all the sections, may pass in order to secure and clamp the sections properly together. The desired number of sections, having the same or different predetermined capacities, are assembled by placing them face to face and clamping them together by means of the bolts j j. The abutting faces of the sections may be smooth, as described` or given any correspondence of form to effect tight joints and good mechanical connection between them. End plates at each end of the series or gang of sections, such as s and t, may be used, and one of them say s-may also contain pump parts.

The means illustrated for driving this pump consist of a shaft m, having a spline m' and having fixed upon it a gear-wheel 0, to be driven by a worm p. When the sections are assembled and mounted, the hollow hubs of all the g gears are in line, and the shaft can be passed through them, thus becoming common to the g gears of all the sections, and by reason of the engagement between the g and ggears all gears in the entire pumping' apparatus are then driven from this shaft. This driving arrangement, however, is subject to considerable modification. It is even preferred that the shaft m extend into the gear g in the first section only or into any desired number of them and the driving then accomplished by transmitting the power through the gears g and their hubs by a notch-andspline connection between the hubs, as seen in Fig. 6. In this way it would not be necessary to use a different driving-shaft m whenever the number of sections was changed.

When the sections are assembled, the ports d are all in line to form a continuous passage requiring but a single connection with the tank or other source of supply, such connection being supplied by the tube 0', communicating with a passage q in one of the sections. The material thus supplied is distributed equally to the receiving sides of all of the sections, and each section delivers to its respective outlet-port such quantity of the material as its gears are designed to deliver.

The support of the pump structure may be afforded by the brackets u and o, one or both of which may be used.

It will loe evident that the size of the structure may be altered at will by merely adding or removing sections and that the sections are interchangeable and can be placed in' any order.

Having described my invention, I claim- 1. The combination of a plurality of sections each comprising a complete pump and having correspondingly-formed abutting faces whereby any desired number can be assembled, means for securing a-plurality of such sections together, and suitable inlet and outlet ports for the various pumps.

2. A pumping apparatus comprising' a plurality of interchangeable sections each of which is a complete pump, in combination with asingle driving-shaft common to all the sections, substantially as described.

3. A pumping apparatus comprising' a plurality of interchangeable sections each of which is a complete pump, all being' clamped together as a single structure and the different pumps being of various capacities.

4. A pumping apparatus comprising a plurality of interchangeable sections each of which is a complete pump, inlet-passages in the various sections communicating with each other and outlet-passages from the various sections independent of each other.

5. A pumping apparatus built u p of sections each of which comprises the parts of a complete pump, said sections being strung upon a bolt or bolts and clamped together thereby.

6. A pumping apparatus built up of sections each of which comprises the parts of a complete pump, said sections being' strung upon a bolt or bolts and clamped together thereby and an inlet-passage common to all the sections.

7. A pumping apparatus comprising a plurality of frame-castings of similar construction, two parallel shafts extending through and common to all of said castings, a gear on each shaft in each casting, the gears in each casting meshing together, means for driving one of the shafts, an inlet-passage communicating with a space on one side of the meshing-point of each pair of gears and an outletport from the space on the opposite side of said meshing-point,substantially as described.

8. A pumping' apparatus comprising a plurality of intermeshing pairs of gears mounted in a suitable frame, said frame having a chamber on each side of the meshing-point of each pair of gears, said gears having different face widths and independent outlet-ducts leading from the spaces on one side of the respective gears.

9. A pumping apparatus comprising a plurality of frame-castings clamped together, two parallel shafts extending through and common to all of the castings, one of said shafts being in interlocking sections, each section carrying a gear-wheel, a number of gear-wheels on the other shaft respectively engaging those on the sectional shaft and suitable inlet and outlet ducts coperating with the engaging wheels to form a plurality of pumps. l

In witness whereof I subscribe my signature in the presence of two witnesses.

PETER COOPER HEWITT.

Witnesses:

WALDo M. (J1-LAPIN, FRANK S. OBER. 

